Manav Bhatia <[email protected]> writes: > I will certainly give these a shot tomorrow. Do you know if these > require any other modification in my code/libMesh, or providing the > command line options would be enough?
Try --node_major_dofs > I have been thinking of doing something with multigrid, but am not > sure if something along those lines is currently feasible with > libMesh<->PETSc interface. Currently I don't have much experience > with multigrid, so I am curious to see what is possible. Do you think > that somehow going between the original mesh and the refined mesh > would provide some reasonable form of multigrid? Multigrid for transonic flow is technical to implement. I don't have much experience with GLS, but from what I've seen, its accuracy is not very good on coarse grids (including the usual lack of conservation). That is a big problem for multigrid, so unless you can use the fine grid to numerically homogenize, producing accurate coarse grid equations (I don't know how to do this for transonic flow), MG convergence will not be very good. OTOH, even a crummy MG algorithm may be better than one-level methods. ------------------------------------------------------------------------------ Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis & visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter _______________________________________________ Libmesh-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/libmesh-users
